Preparation of shoe parts



Sul? 15 1924. 1,501,072

H. R. STANBON PREPARATION OF SHOE PARTS Filed July 27 1921 2 Sheets-Sheet l FURY 15 1924.

H. R. STANBON PREPARATION OF SHOE PARTS 1921 2 Sheets-Sheet 2.

File d July 2'7,

Patented July 15, 1924.

TES

HARRY R. STANBON, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, .A CORPORATION OF NEW JERSEY.

PREPARATION OF SHOE PARTS.

To all whom may concern:

Be it known that I, HARRY R. STANBON, a citizen of the United States, and resident of Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in the Preparation of Shoe Parts, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates primarily to the preparation of shoe parts. For purposes of illustration the invention is herein described and explained with particular reference to the preparation of parts perforated for the ornamentation of the uppers of shoes.

\Vhen it isdesired to. perform in sequence two or more operations upon articles or blanks of material of such a character as those used for shoe upper parts, and particularly when the successive operations are of such character that a nice coordination is necessary, difliculty is frequently found in controlling the position of the stock to be operated upon with respect to the different operating means so as to perform the successive operations each exactly upon the desired portion of the stock. For example, if it is desired to perform successively a perforating and a dieing out operation in the preparation of shoe upper parts the major portion of the surfaces of which are to be perforated, it is necessary for satisfactory results to control the two operations in' such manner that the relation of the stock to the perforating and the dieing out instrumentalities will be practically unvarying, en the shoe upper parts are of the character disclosed in the accompanying drawings it is not feasible to perform the perforating and dieing out simultaneously since the proximity of the dies for performing the latter operation would impose such limitations upon the width of a stripper plate as -to render the use of one impractical. Ac-

cordingly it is often necessary toperform the two operations successively.

Moreover, it is particularly important that, after the first operation upon the stock has been performed, the stock-shall be presented in predetermined relation to the means for performing the second operation and, therefore, in order that the position of the stock may be properly controlled, it is preferable to die out the stock after, rather than before, it has been perforated.

The difliculty in positioning shoe upper stock in such manner as to insure an exactly predetermined relation between successive operations thereon arises principally from the particular characteristics of that stock. Upper leather, for example, especially in the lighter grades, may be so easily wrinkled, stretched or distorted that it is a matter of great difliculty to position it accurately by engagement with its peripheral edge. This difficulty is increased where, as frequently happens, any edge gaging means for that purpose is concealed from the operators view, or in operations of such a character that the operator must remove his hands from the stock and thus leave it more or less free before it is operated upon. This difficulty is still further increased, in the case of shoe upper parts of the character herein disclosed, Where the stock is operated upon after it has been perforated and has thereby been made more flexible and extensible.

Accordingly, it is an object of the present invention so to control the positioning of stock, such as parts of shoe uppers, in the performance of successive operations as to ensure that the second of these operations shall be performed exactly in proper relation to a characteristic imparted to the stock by the first or previous operation. In the illustrative exemplification of the invention, this is accomplished by forming positioning surfaces, provided by jig holes, in a shoe upper part during the operation of forming ornamental perforations in such part, such surfaces being located in exact predetermined relation to the perforations, and by utilizing, for a subsequent dieing out operation on the shoe upper part; jig pins corresponding to these ig holes and bearing a predetermined relation to the instrumentalities which perform said dieing out operation while the ig holes are engaged by the jig pins. The position of the shoe upper part being operated upon is thus precisely controlled to ensure the desired proper coordination of the two operations. 7

The invention in its different aspects comprises not only a method of performing' successive perforating and dieing out operasuccessively performed operations.

parts, but also mechanism for co-ordinaing onsidered in the latter aspect, features of the invention consist in the provision in a machine of the character set forth,.of a work presenter movably attached to a portion of the machine and provided with a pair of jig pins arranged to cooperate with jig holes previously formed in the stock and movable to a position exactly predetermined, as by a stop, to control the position of the stock for the performance of an operation thereon. In the operation of the illustrated machine, jig holes are formed in the upper stock simultaneously with the forming of ornamental perforations therein and in predetermined relation to those perforations.-

Then the stock is positioned, with the jig pins of the presenter received by the jig holes in the stock, and the presenter is moved, carrying the stock with it into position for the performance of the second, in this case dieing out, operation. Since the presenter with its jig pins and the stock carried thereby are always moved to the same position and into precisely the same predetermined relation to the dieing out die, the stock is presented to this die in such manner that the relation of the cuts made by it to the perforations is entirely uniform,

With the above and other objects in view the invention will now be described with reference to the accompanying drawings, which illustrate mechanism by which the method of the invention may be carried out and which show a preferred form of machine embodying the invention, and pointed out in the subjoined claims. It should be understood, however, that the machine of the accompanying drawings is shown primarily for purposes of illustration and that in some of its aspects the invention is in no way limited thereto.

In the drawings,

Fig. 1 illustrates a perforating machine'or press in which the mechanism ofthe present invention is embodied;

Fig. 2 is a cross section through a portion of the machine of Fig. 1 and showing the work presenter and the die associated therewith as in section on line 22 of Fig. 4;

Fig. 3 is a perspective View of a perforating punch and die carrying plate provided with the work presenter of the present invention;

Fig. 4 is a plan view of the structure of Fig. 3;

Fig. 5 is a perspective view, with certain parts in section to show the internal structure, of the right hand portion of the device of Fig. 3 with the stripper plate removed;

Fig. 6 is an edge View of the work presenter and a portion of the stripper plateof Fig. 4; and

Figs. 7 to 11 inclusive illustrate successive steps in the formation of a perforated shoe part from a blank of sheet material such as upper leather.

Fig. 1 illustrates a gang perforating machine or press of a type provided with a base or bed 14 on which may be supported'a punch or die carrying plate 16 and having also a punch block or platen 18 suitably guided at 22-24 for reciprocation as by toggle mechanism 26. Since the specific perforating machine or press illustrated forms no part of the present invention and is, indeed, of a type well-known and frequently used in the manufacture of shoes, further description thereof is believed to be unnecessary. Sullice it to say that at the will of the operative the platen 18 may be caused to descend and force the punch tubes or dies supported by the bed 14 through sheet material such as leather positioned between the punch tubes or dies and the platen to perforate or cut the stock as determined by the punch tubes or dies.

As illustrated in Figs. 2 to 6 nclusive, the plate 16, which is provided with a pair of upwardly extending pins 28 arranged slidably to enter corresponding holes in the platen of the machine to insure proper registration of the die carrying plate and platen, carries a set of perforating tubes 30 and also a double die 32 (see Fig. 2) for die-ing out portions of the stock for the desired shoe parts which, as shown in Fig. 11, are approximately of the shape of narrow rings. Adjacent to the punch tubes 30 and in appropriate relation thereto is an edge gage 34 illustrated as comprising a series of spaced pins arranged to engage the edge of suitably formed blanks A (Fig. 4).

In predetermined relation to the perforating tubes 30 are a pair of jig hole forming punch tubes 36 arranged to cut a pair of jig holes 38 in each blank at the same time that the ornamental perforations 40 are formed therein by the perforating tubes 30. A stripper plate 42 carries the edge gage 34 and is in turn carried by and fastened by screws to a series of pins or sleeves 44 mounted for sliding movement in suitable holes in a plate 48 carried by plate 16 and is yieldably held in elevated position as by compression springs 46 engaging collars upon said pins and reacting against plate 16.

Pivotally carried by the stripper plate 42 as at 50 is a work presenter com rising a flat plate 52 provided with a han le 54 by which it may be manipulated and carrying also a pair of jig pins 56, these pins being spaced apart a distance equal to the distance between the jig hole forming punches 36 so that blanks which have been perforated and have had ig holes 38 formed therein by those punches may be positioned with the jig holes receiving the jig pins of the work presenter. As illustrated the stripper plate 42 is pro- -.tion of the stock containing the jig holes,

vided with a pair of notches 58 arranged to receive the jig pins when the presenter is swung towards them and 'to act as stops accurately to position the work presenter and shoe part or blank carried thereby.

Carried by the plate 16 in suitable relation to the operative position of the work presenter is the die 32 previously referred to and in the illustrated embodiment of the invention arranged to form the inner and outer contours of the shoe parts from the already perforated portions of the blanks. This die 32 may appropriately be provided with stripper plates 60 and 62 supported, as

shown in Fig.2, in the manner already de scribed in connection with stripper plate 42 and arranged like that stripper plate to be depressed by the platen 18 to permit the cutting of the stock by the dies. It will be noted that the stripper plate 42 surrounds both the perforating and jig hole punches and the die 32 and co-operates with the plates 60 and 62 in lifting the severed parts out of the double annulus of the die.

In the operation of the machine a previously prepared blank shaped for instance as A of Fig. 7 is first positioned as indicated in dotted lines in Fig. 4 and the machine is operated tov form'the perforations 4:0 and the jig holes 38 therein, these jig holes being in a part of the. work which later will be discarded. As illustrated this blank is preferably made of such a form that two shoe parts may be cut therefrom so as to secure uniformity of stock for the two parts constituting a pair. Accordingly, after one end of the blank has been perforated and provided with jig holes 38 as shown in Fig. 8, the blankis turned around and the other end' presented to the perforating and jig hole forming punch tubes after which the blank has the form and characteristics shown in Fig. 9. After this the blank is applied to the work presenter 52 with the jig pins 56 entering the appropriate pair of jig holes 38, the work presenter at that time being conveniently out from and clear of the dies as indicated in Fig. 3. It is then swung towards the machine until the notches' '58 engage the jig pins 56 and act as stops to prevent further movement of the work presenter and the work carried thereby. With the work so positioned the machine is operated to die out one shoe part from the blank after whichthat shoe part and the remainder of the blank are removed and the blank is turned around and presented to the machine in the same manner to die out a second shoe part, the two parts being died out from the two ends of the blank as indicated. in Fig. 10. This operation serves to trim off the porthus leaving the portion to be utilized unmarred.

Fig. 11 illustrates one of the shoe upper parts prepared as described and provided with ornamental perforations in accurately determined relation to the edges thereof as the part is died out from the blank. It will thus be understood that the successively performed perforating and dieing out 0 erations have been coordinated to pro uce shoe parts with a very high degree of accuracy and uniformity.

Having described -my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. The method of preparing shoe upper parts which comprises perforating a piece of shoe upper stock and at the same time punching a pair of jig holes therein in predetermined relation to the perforation, and dieing out a shoe upper part from the stock by a cut positioned relatively to the perforation as determined by the jig holes.

2. The method of preparing shoe upper parts which comprises perforating a piece of shoe upper leather stock and punching a pair of jig holes therein in predetermined relation to the perforation and subsequently utilizing said jig holes to control the position of said piece of perforated stock while dieing it out.

3. The method of preparing shoe upper parts which comprises perforating a piece of shoe upper stock'and at the same time forming a pair of holes therein, engaging said jig holes by a pair of jig pins to control the position of the piece of stock, and dieing out a shoe upper part from the pir ce of perforated stock to a contour having a predetermined relation to the perforation while its position is so controlled.

4. The method of preparing shoe upper parts which comprises perforating a piece of shoe upper stock and at the same time forming a plurality of jig holes in a por tion of said piece of stock outside of the limits of the shoe part to be produced and utilizing said jig holes to control the position of said piece of stock for the performance of a trimming operation.

5. The method of making a shoe upper part having an ornamentation in predetermined relation to its edge contour, which consists indieing out said part from shoe upper stock and providing it with said ornamentation in difierent operations, and' determining the position of the stock for one determined relation to one of said tools to form jig holes in the stock, and utilizing jig pins bearing a predetermined relation to the other tool to position the stock for the operation of said tool by engaging it in said jig holes.

7. The method of preparing shoe uppe parts which comprises perforating a piece of shoe upper stock in one position, and subsequently dieing out an approximately ring-shaped shoe part from the perforated piece of stock in another position with its edge contours in predetermined relation to the perforating.

8. In a machine for operating upon shoe parts, a Work presenter comprising a flat plate movably carried by and pivoted at one end on the machine, and a pair of jig pins carried by the work presenter forpositioning a piece of shoe stock to be operated upon.

9. In a machine for operating upon shoe.

parts, a work presenter movably attached to the machine and movable in a horizontal plane, a pair of-jig pins carried by said presenter, and a stop on the machine to limit the movement of said presenter to control the position of a piece of work provided with a pair of holes engaged by said jig pins.

10. A machine for preparing shoe parts having, in combination, means for performing two operations, means to form a pair of jig holes in the stock operated upon during the performing of the first operation, a work presenter, and a pair of jig pins carried thereby arranged to enter the jig holes in a piece of stock on which the first operation has been performed to control the position of the stockwith respect to the means for performing the second operation.

11. A machine of the class described having, in. combination, means for operating upon shoe parts, a work presenter movably attached to the machine, and a pair of jig pins carried by said presenter arranged to control the position of the work with respect to said presenter, one of said jig pins being arranged to enter a notch formed in a part of the machine to control the position of the Work with respect to said operating means.

12. A machine for operating upon shoe parts having, in combination, movable operating instrumentalities, and a work presenter carried by the machine and movable between operating position and a Work receiving position out from and clear of the path of movement of said operating instrumentalities, said work presenter having positioning means constructed and arranged to engage positioning surfaces Within the margin of a shoe part.

13. In a machine for operating upon shoe parts, a Work presenter comprising a flat plate movably mounted upon the machine,

a pair of jig pins carried by the work presenter and arranged to enter a pair of holes 7 in the Work, said work presenter having a handle to facilitate the moving of the Work presenter to move the work into and out of operative position.

14. A machine for preparing shoe parts having, in combination, perforating means, a pair of jig hole forming members adjacent to and in predetermined relation to said perforating means, and a work presenter having a pair of jig pins arranged to be received by jig holes formed in the stock by the jig hole forming members to position the stock for the performance of a subsequent operation.

15. A machine for preparing shoe parts having, in combination, a series of tubular perforating punches, a pair of jig hole forming punches adjacent and in predetermined relation thereto, a die for performing a subsequent operation on stock which has previously been operated upon by the perforating and jig hole formin punches, and a work'presenter provided W1th a pair of jig pins arranged to enter the jig holes in the perIorated stock to control the position of said stock .with respect to said die.

'16. .A machine. for preparing shoe parts having, in combination, means for ornamenting sheet material and at the same time cutting a pair" of jig holes therein, an edge gage to facilitate the presenting of a piece of stock to said ornamenting and jighole forming means, a die for cutting a shoe part from a piece of stock which has previously been operated upon by said ornamenting and jig hole forming means, and a Work presenter in operative relation to said die and provided with a pair of jig pins arranged to enter the jig holes in the stock to control the presentation of the stock to said die.

17 A machine for preparing shoe parts having, in combination, a series of perforating punches, a pair of jig hole forming punches adjacent and in predetermined relation thereto, a die for cutting shoe parts from stock which has previously been operated upon by said perforating and jig hole forming punches, a stripper plate arranged in operative relation to said punches and said die, and a Work presenter movably attached to said stripper plate and provided with a pair of jig pins arranged to receive the jig holes in a pieceof stock which has previously been operated upon by said perforating and jig hole forming punches to control the position of said piece of stock for the operation of said die thereon.

18. A machine for preparing shoe .parts having, in combination, a series of perforating punches, a die for cutting shoe parts from pieces of stock which have previously been operated upon by said perforating punches, and a singlestripper plate for said punches and die. v

19. A machine for preparing shoe parts having, in combination, a die for cutting out shoe parts, a stripper plate for said die,

and work presenting means carried by said stripper plate and arranged for movement relatively thereto to bring the piece of stock into accurate relation to said die.

20. A machine for preparing shoe parts having, in combination, a die, a stripper plate for said die, a work presenter movably carried by said stripper plate and provided with a pair of jig pins, one of said pins being arranged to enter a notch in the edge of said stripper plate to control the position of a piece. ofwork having holes engaged by said jig pins with respect to said die.

21. A machine for operating upon sheet material having, in combination, a series of tubular punches arranged to form a group of perforations, dies for subsequently cutting out a ring-shaped piece including said perforations, said dies comprising an inner die and an outer die, a stripper plate arranged to surround the outer die and the punches, and. a stripper plate occupying the space between the two 'es.

22. A machine for operating upon sheet material having, in combination,- a series of tubular punches arranged to form a group of perforations, dies for subsequently cutting out a ring-shaped piece including said .perforations, said dies comprising an inner die and an outer die, a common stripper plate arranged to surround the outer die and the punches, a stripper plate occupying the space between the inner and outer dies, and a third stripper plate occupying the space inside the inner die.

23. A machine for making shoe upper parts, each having an ornamentation in predetermined relation to its edge contour, comprising, in combination, separate means for formin an ornamentation in the stock and for die-mg out a shoe upper part from the stock in difl'erent operations, punches located in predetermined relation to one of said means for forming jig holes in the stock during the first operation and jig pins located in predetermined relation to said other means constructed and arranged to engage said jig holes and position the stock for the other operation.

In testimony whereof I have signed my name to this specification.

HARR

Y R. STANBON. 

